/Engine/Source/Runtime/Engine/Classes/Engine/Engine.h
Returns the first LocalPlayer that matches the given platform user id
The player that has the PlatformUserId specified, or nullptr if no players have that PlatformUserId
[ULocalPlayer](API\Runtime\Engine\Engine\ULocalPlayer) * GetLocalPlayerFromPlatformUserId ( [UWorld](API\Runtime\Engine\Engine\UWorld) * InWorld, const [FPlatformUserId](API\Runtime\Core\Misc\FPlatformUserId) PlatformUserId ) const